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Simple Machines Unit F Chapter 2 Review Questions

Simple Machines Unit F Chapter 2 Review Questions. Lesson 1 Questions 1. Give three examples of levers. 2. Where should the fulcrum of a lever be placed if you need to lift a heavy load. 3. What is the scientific formula to find work?. 4. Give two examples of a person doing work.

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Simple Machines Unit F Chapter 2 Review Questions

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  1. Simple MachinesUnit F Chapter 2 Review Questions

  2. Lesson 1 Questions 1. Give three examples of levers. 2. Where should the fulcrum of a lever be placed if you need to lift a heavy load. 3. What is the scientific formula to find work?

  3. 4. Give two examples of a person doing work. 5. Find the work being done when a person moves a brick with 10N of force 20 meters. label answer 6. Explain the three different types of levers and how you remember them.

  4. Lesson 2 Questions 7. Which pulley only changes the direction of the effort force and give one example? 8. Which pulley only changes the size of the force and give one example. 9. How does a wheel & axle help us do work? Give one example.

  5. Answers 1. wheelbarrow, crowbar, seesaw, door, light switch 2. the fulcrum should be close to the load 3. Work = Force x Distance

  6. 4. picking up a book, throwing a ball, closing a door 5. 10N x 20m = 200 N-m or joules 6. FLEx – 1st Class Fulcrum in middle 2nd Class Load in middle 3rd Class Effort Force in middle

  7. Lesson 2 Answers 7. Fixed Pulley, flag pole 8. Movable Pulley, crane 9. Increases the effort force, screwdriver

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